1 /* Copyright (C) 2007-2008 One Stop Systems
2 * Copyright (C) 2003-2006 SBE, Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17 #include <linux/types.h>
18 #include <linux/netdevice.h>
19 #include <linux/module.h>
20 #include <linux/hdlc.h>
21 #include <linux/if_arp.h>
22 #include <linux/init.h>
23 #include <asm/uaccess.h>
24 #include <linux/rtnetlink.h>
25 #include <linux/skbuff.h>
26 #include "pmcc4_sysdep.h"
27 #include "sbecom_inline_linux.h"
30 #include "pmcc4_ioctls.h"
31 #include "pmcc4_private.h"
34 /*******************************************************************************
35 * Error out early if we have compiler trouble.
37 * (This section is included from the kernel's init/main.c as a friendly
38 * spiderman recommendation...)
40 * Versions of gcc older than that listed below may actually compile and link
41 * okay, but the end product can have subtle run time bugs. To avoid associated
42 * bogus bug reports, we flatly refuse to compile with a gcc that is known to be
43 * too old from the very beginning.
45 #if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)
46 #error Sorry, your GCC is too old. It builds incorrect kernels.
49 #if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
50 #warning gcc-4.1.0 is known to miscompile the kernel. A different compiler version is recommended.
53 /*******************************************************************************/
55 #define CHANNAME "hdlc"
57 /*******************************************************************/
58 /* forward references */
59 status_t c4_chan_work_init(mpi_t *, mch_t *);
60 void musycc_wq_chan_restart(void *);
61 status_t __init c4_init(ci_t *, u_char *, u_char *);
62 status_t __init c4_init2(ci_t *);
63 ci_t *__init c4_new(void *);
64 int __init c4hw_attach_all(void);
65 void __init hdw_sn_get(hdw_info_t *, int);
67 #ifdef CONFIG_SBE_PMCC4_NCOMM
68 irqreturn_t c4_ebus_intr_th_handler(void *);
71 int c4_frame_rw(ci_t *, struct sbecom_port_param *);
72 status_t c4_get_port(ci_t *, int);
73 int c4_loop_port(ci_t *, int, u_int8_t);
74 int c4_musycc_rw(ci_t *, struct c4_musycc_param *);
75 int c4_new_chan(ci_t *, int, int, void *);
76 status_t c4_set_port(ci_t *, int);
77 int c4_pld_rw(ci_t *, struct sbecom_port_param *);
78 void cleanup_devs(void);
79 void cleanup_ioremap(void);
80 status_t musycc_chan_down(ci_t *, int);
81 irqreturn_t musycc_intr_th_handler(void *);
82 int musycc_start_xmit(ci_t *, int, void *);
85 extern struct s_hdw_info hdw_info[];
87 #if defined(CONFIG_SBE_HDLC_V7) || defined(CONFIG_SBE_WAN256T3_HDLC_V7) || \
88 defined(CONFIG_SBE_HDLC_V7_MODULE) || defined(CONFIG_SBE_WAN256T3_HDLC_V7_MODULE)
95 #define V7(x) (x ## _v7)
96 extern int hdlc_netif_rx_v7(hdlc_device *, struct sk_buff *);
97 extern int register_hdlc_device_v7(hdlc_device *);
98 extern int unregister_hdlc_device_v7(hdlc_device *);
104 int error_flag; /* module load error reporting */
105 int cxt1e1_log_level = LOG_ERROR;
106 static int log_level_default = LOG_ERROR;
107 module_param(cxt1e1_log_level, int, 0444);
109 int cxt1e1_max_mru = MUSYCC_MRU;
110 static int max_mru_default = MUSYCC_MRU;
111 module_param(cxt1e1_max_mru, int, 0444);
113 int cxt1e1_max_mtu = MUSYCC_MTU;
114 int max_mtu_default = MUSYCC_MTU;
115 module_param(cxt1e1_max_mtu, int, 0444);
117 int max_txdesc_used = MUSYCC_TXDESC_MIN;
118 int max_txdesc_default = MUSYCC_TXDESC_MIN;
119 module_param(max_txdesc_used, int, 0444);
121 int max_rxdesc_used = MUSYCC_RXDESC_MIN;
122 int max_rxdesc_default = MUSYCC_RXDESC_MIN;
123 module_param(max_rxdesc_used, int, 0444);
125 /****************************************************************************/
126 /****************************************************************************/
127 /****************************************************************************/
130 getuserbychan(int channum)
134 ch = c4_find_chan(channum);
135 return ch ? ch->user : NULL;
140 get_hdlc_name(hdlc_device *hdlc)
142 struct c4_priv *priv = hdlc->priv;
143 struct net_device *dev = getuserbychan(priv->channum);
148 /***************************************************************************/
149 #include <linux/workqueue.h>
152 * One workqueue (wq) per port (since musycc allows simultaneous group
153 * commands), with individual data for each channel:
155 * mpi_t -> struct workqueue_struct *wq_port; (dynamically allocated using
156 * create_workqueue())
158 * With work structure (work) statically allocated for each channel:
160 * mch_t -> struct work_struct ch_work; (statically allocated using ???)
166 * Called by the start transmit routine when a channel TX_ENABLE is to be
167 * issued. This queues the transmission start request among other channels
168 * within a port's group.
171 c4_wk_chan_restart(mch_t *ch)
175 #ifdef RLD_RESTART_DEBUG
176 pr_info(">> %s: queueing Port %d Chan %d, mch_t @ %p\n",
177 __func__, pi->portnum, ch->channum, ch);
180 /* create new entry w/in workqueue for this channel and let'er rip */
182 /** queue_work(struct workqueue_struct *queue,
183 ** struct work_struct *work);
185 queue_work(pi->wq_port, &ch->ch_work);
189 c4_wk_chan_init(mpi_t *pi, mch_t *ch)
192 * this will be used to restart a stopped channel
195 /** INIT_WORK(struct work_struct *work,
196 ** void (*function)(void *),
199 INIT_WORK(&ch->ch_work, (void *)musycc_wq_chan_restart);
200 return 0; /* success */
204 c4_wq_port_init(mpi_t *pi)
207 char name[16]; /* NOTE: name of the queue limited by system
208 * to 10 characters */
210 return 0; /* already initialized */
213 snprintf(name, sizeof(name), "%s%d", pi->up->devname, pi->portnum);
215 #ifdef RLD_RESTART_DEBUG
216 pr_info(">> %s: creating workqueue <%s> for Port %d.\n",
217 __func__, name, pi->portnum); /* RLD DEBUG */
219 pi->wq_port = create_singlethread_workqueue(name);
222 return 0; /* success */
226 c4_wq_port_cleanup(mpi_t *pi)
229 * PORT POINT: cannot call this if WQ is statically allocated w/in
230 * structure since it calls kfree(wq);
233 destroy_workqueue(pi->wq_port); /* this also calls
234 * flush_workqueue() */
239 /***************************************************************************/
242 c4_linux_interrupt(int irq, void *dev_instance)
244 struct net_device *ndev = dev_instance;
246 return musycc_intr_th_handler(netdev_priv(ndev));
250 #ifdef CONFIG_SBE_PMCC4_NCOMM
252 c4_ebus_interrupt(int irq, void *dev_instance)
254 struct net_device *ndev = dev_instance;
256 return c4_ebus_intr_th_handler(netdev_priv(ndev));
262 void_open(struct net_device *ndev)
264 pr_info("%s: trying to open master device !\n", ndev->name);
270 chan_open(struct net_device *ndev)
272 hdlc_device *hdlc = dev_to_hdlc(ndev);
273 const struct c4_priv *priv = hdlc->priv;
276 ret = hdlc_open(ndev);
278 pr_info("hdlc_open failure, err %d.\n", ret);
282 ret = c4_chan_up(priv->ci, priv->channum);
285 try_module_get(THIS_MODULE);
286 netif_start_queue(ndev);
287 return 0; /* no error = success */
292 chan_close(struct net_device *ndev)
294 hdlc_device *hdlc = dev_to_hdlc(ndev);
295 const struct c4_priv *priv = hdlc->priv;
297 netif_stop_queue(ndev);
298 musycc_chan_down((ci_t *) 0, priv->channum);
300 module_put(THIS_MODULE);
306 chan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
308 return hdlc_ioctl(dev, ifr, cmd);
313 chan_attach_noop(struct net_device *ndev, unsigned short foo_1,
314 unsigned short foo_2)
316 /* our driver has nothing to do here, show's
323 static struct net_device_stats *
324 chan_get_stats(struct net_device *ndev)
327 struct net_device_stats *nstats;
328 struct sbecom_chan_stats *stats;
332 struct c4_priv *priv;
334 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
335 channum = priv->channum;
338 ch = c4_find_chan(channum);
342 nstats = &ndev->stats;
345 memset(nstats, 0, sizeof(struct net_device_stats));
346 nstats->rx_packets = stats->rx_packets;
347 nstats->tx_packets = stats->tx_packets;
348 nstats->rx_bytes = stats->rx_bytes;
349 nstats->tx_bytes = stats->tx_bytes;
350 nstats->rx_errors = stats->rx_length_errors +
351 stats->rx_over_errors +
352 stats->rx_crc_errors +
353 stats->rx_frame_errors +
354 stats->rx_fifo_errors +
355 stats->rx_missed_errors;
356 nstats->tx_errors = stats->tx_dropped +
357 stats->tx_aborted_errors +
358 stats->tx_fifo_errors;
359 nstats->rx_dropped = stats->rx_dropped;
360 nstats->tx_dropped = stats->tx_dropped;
362 nstats->rx_length_errors = stats->rx_length_errors;
363 nstats->rx_over_errors = stats->rx_over_errors;
364 nstats->rx_crc_errors = stats->rx_crc_errors;
365 nstats->rx_frame_errors = stats->rx_frame_errors;
366 nstats->rx_fifo_errors = stats->rx_fifo_errors;
367 nstats->rx_missed_errors = stats->rx_missed_errors;
369 nstats->tx_aborted_errors = stats->tx_aborted_errors;
370 nstats->tx_fifo_errors = stats->tx_fifo_errors;
377 get_ci_by_dev(struct net_device *ndev)
379 return (ci_t *)(netdev_priv(ndev));
384 c4_linux_xmit(struct sk_buff *skb, struct net_device *ndev)
386 const struct c4_priv *priv;
389 hdlc_device *hdlc = dev_to_hdlc(ndev);
393 rval = musycc_start_xmit(priv->ci, priv->channum, skb);
397 static const struct net_device_ops chan_ops = {
398 .ndo_open = chan_open,
399 .ndo_stop = chan_close,
400 .ndo_start_xmit = c4_linux_xmit,
401 .ndo_do_ioctl = chan_dev_ioctl,
402 .ndo_get_stats = chan_get_stats,
405 static struct net_device *
406 create_chan(struct net_device *ndev, ci_t *ci,
407 struct sbecom_chan_param *cp)
410 struct net_device *dev;
414 if (c4_find_chan(cp->channum))
415 return NULL; /* channel already exists */
418 struct c4_priv *priv;
420 /* allocate then fill in private data structure */
421 priv = OS_kmalloc(sizeof(struct c4_priv));
423 pr_warning("%s: no memory for net_device !\n",
427 dev = alloc_hdlcdev(priv);
429 pr_warning("%s: no memory for hdlc_device !\n",
435 priv->channum = cp->channum;
438 hdlc = dev_to_hdlc(dev);
440 dev->base_addr = 0; /* not I/O mapped */
441 dev->irq = ndev->irq;
442 dev->type = ARPHRD_RAWHDLC;
443 *dev->name = 0; /* default ifconfig name = "hdlc" */
445 hi = (hdw_info_t *)ci->hdw_info;
446 if (hi->mfg_info_sts == EEPROM_OK) {
447 switch (hi->promfmt) {
448 case PROM_FORMAT_TYPE1:
449 memcpy(dev->dev_addr,
450 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
452 case PROM_FORMAT_TYPE2:
453 memcpy(dev->dev_addr,
454 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
457 memset(dev->dev_addr, 0, 6);
461 memset(dev->dev_addr, 0, 6);
463 hdlc->xmit = c4_linux_xmit;
465 dev->netdev_ops = &chan_ops;
467 * The native hdlc stack calls this 'attach' routine during
468 * hdlc_raw_ioctl(), passing parameters for line encoding and parity.
469 * Since hdlc_raw_ioctl() stack does not interrogate whether an 'attach'
470 * routine is actually registered or not, we supply a dummy routine which
471 * does nothing (since encoding and parity are setup for our driver via a
472 * special configuration application).
475 hdlc->attach = chan_attach_noop;
477 /* needed due to Ioctl calling sequence */
479 ret = register_hdlc_device(dev);
480 /* NOTE: <stats> setting must occur AFTER registration in order to "take" */
481 dev->tx_queue_len = MAX_DEFAULT_IFQLEN;
483 /* needed due to Ioctl calling sequence */
486 if (cxt1e1_log_level >= LOG_WARN)
487 pr_info("%s: create_chan[%d] registration error = %d.\n",
488 ci->devname, cp->channum, ret);
491 /* failed to register */
498 /* the idea here is to get port information and pass it back (using pointer) */
500 do_get_port(struct net_device *ndev, void *data)
503 ci_t *ci; /* ci stands for card information */
504 struct sbecom_port_param pp;/* copy data to kernel land */
506 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
508 if (pp.portnum >= MUSYCC_NPORTS)
510 ci = get_ci_by_dev(ndev);
512 return -EINVAL; /* get card info */
514 ret = c4_get_port(ci, pp.portnum);
517 if (copy_to_user(data, &ci->port[pp.portnum].p,
518 sizeof(struct sbecom_port_param)))
523 /* this function copys the user data and then calls the real action function */
525 do_set_port(struct net_device *ndev, void *data)
527 ci_t *ci; /* ci stands for card information */
528 struct sbecom_port_param pp;/* copy data to kernel land */
530 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
532 if (pp.portnum >= MUSYCC_NPORTS)
534 ci = get_ci_by_dev(ndev);
536 return -EINVAL; /* get card info */
538 if (pp.portnum >= ci->max_port) /* sanity check */
541 memcpy(&ci->port[pp.portnum].p, &pp, sizeof(struct sbecom_port_param));
542 return c4_set_port(ci, pp.portnum);
545 /* work the port loopback mode as per directed */
547 do_port_loop(struct net_device *ndev, void *data)
549 struct sbecom_port_param pp;
552 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
554 ci = get_ci_by_dev(ndev);
557 return c4_loop_port(ci, pp.portnum, pp.port_mode);
560 /* set the specified register with the given value / or just read it */
562 do_framer_rw(struct net_device *ndev, void *data)
564 struct sbecom_port_param pp;
568 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
570 ci = get_ci_by_dev(ndev);
573 ret = c4_frame_rw(ci, &pp);
576 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
581 /* set the specified register with the given value / or just read it */
583 do_pld_rw(struct net_device *ndev, void *data)
585 struct sbecom_port_param pp;
589 if (copy_from_user(&pp, data, sizeof(struct sbecom_port_param)))
591 ci = get_ci_by_dev(ndev);
595 ret = c4_pld_rw(ci, &pp);
598 if (copy_to_user(data, &pp, sizeof(struct sbecom_port_param)))
603 /* set the specified register with the given value / or just read it */
605 do_musycc_rw(struct net_device *ndev, void *data)
607 struct c4_musycc_param mp;
611 if (copy_from_user(&mp, data, sizeof(struct c4_musycc_param)))
613 ci = get_ci_by_dev(ndev);
616 ret = c4_musycc_rw(ci, &mp);
619 if (copy_to_user(data, &mp, sizeof(struct c4_musycc_param)))
625 do_get_chan(struct net_device *ndev, void *data)
627 struct sbecom_chan_param cp;
630 if (copy_from_user(&cp, data,
631 sizeof(struct sbecom_chan_param)))
634 ret = c4_get_chan(cp.channum, &cp);
638 if (copy_to_user(data, &cp, sizeof(struct sbecom_chan_param)))
644 do_set_chan(struct net_device *ndev, void *data)
646 struct sbecom_chan_param cp;
649 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
651 ci = get_ci_by_dev(ndev);
654 return c4_set_chan(cp.channum, &cp);
658 do_create_chan(struct net_device *ndev, void *data)
661 struct net_device *dev;
662 struct sbecom_chan_param cp;
665 if (copy_from_user(&cp, data, sizeof(struct sbecom_chan_param)))
667 ci = get_ci_by_dev(ndev);
670 dev = create_chan(ndev, ci, &cp);
673 ret = c4_new_chan(ci, cp.port, cp.channum, dev);
675 /* needed due to Ioctl calling sequence */
677 unregister_hdlc_device(dev);
678 /* needed due to Ioctl calling sequence */
686 do_get_chan_stats(struct net_device *ndev, void *data)
688 struct c4_chan_stats_wrap ccs;
691 if (copy_from_user(&ccs, data,
692 sizeof(struct c4_chan_stats_wrap)))
695 ret = c4_get_chan_stats(ccs.channum, &ccs.stats);
699 if (copy_to_user(data, &ccs,
700 sizeof(struct c4_chan_stats_wrap)))
705 do_set_loglevel(struct net_device *ndev, void *data)
707 unsigned int cxt1e1_log_level;
709 if (copy_from_user(&cxt1e1_log_level, data, sizeof(int)))
711 sbecom_set_loglevel(cxt1e1_log_level);
716 do_deluser(struct net_device *ndev, int lockit)
718 if (ndev->flags & IFF_UP)
724 const struct c4_priv *priv;
727 priv = (struct c4_priv *)dev_to_hdlc(ndev)->priv;
729 channum = priv->channum;
731 ch = c4_find_chan(channum);
734 ch->user = NULL; /* will be freed, below */
737 /* needed if Ioctl calling sequence */
740 unregister_hdlc_device(ndev);
741 /* needed if Ioctl calling sequence */
749 do_del_chan(struct net_device *musycc_dev, void *data)
751 struct sbecom_chan_param cp;
752 char buf[sizeof(CHANNAME) + 3];
753 struct net_device *dev;
756 if (copy_from_user(&cp, data,
757 sizeof(struct sbecom_chan_param)))
759 if (cp.channum > 999)
761 snprintf(buf, sizeof(buf), CHANNAME "%d", cp.channum);
762 dev = __dev_get_by_name(&init_net, buf);
765 ret = do_deluser(dev, 1);
768 return c4_del_chan(cp.channum);
770 int c4_reset_board(void *);
773 do_reset(struct net_device *musycc_dev, void *data)
775 const struct c4_priv *priv;
778 for (i = 0; i < 128; i++) {
779 struct net_device *ndev;
780 char buf[sizeof(CHANNAME) + 3];
782 sprintf(buf, CHANNAME "%d", i);
783 ndev = __dev_get_by_name(&init_net, buf);
786 priv = dev_to_hdlc(ndev)->priv;
788 if ((unsigned long) (priv->ci) ==
789 (unsigned long) (netdev_priv(musycc_dev))) {
790 ndev->flags &= ~IFF_UP;
791 netif_stop_queue(ndev);
799 do_reset_chan_stats(struct net_device *musycc_dev, void *data)
801 struct sbecom_chan_param cp;
803 if (copy_from_user(&cp, data,
804 sizeof(struct sbecom_chan_param)))
806 return c4_del_chan_stats(cp.channum);
810 c4_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
820 struct sbe_brd_info bip;
821 struct sbe_drv_info dip;
822 struct sbe_iid_info iip;
823 struct sbe_brd_addr bap;
824 struct sbecom_chan_stats stats;
825 struct sbecom_chan_param param;
826 struct temux_card_stats cards;
827 struct sbecom_card_param cardp;
828 struct sbecom_framer_param frp;
833 if (!capable(CAP_SYS_ADMIN))
835 if (cmd != SIOCDEVPRIVATE + 15)
837 ci = get_ci_by_dev(ndev);
840 if (ci->state != C_RUNNING)
842 if (copy_from_user(&iocmd, ifr->ifr_data, sizeof(iocmd)))
845 if (copy_from_user(&len, ifr->ifr_data + sizeof(iocmd), sizeof(len)))
850 pr_info("c4_ioctl: iocmd %x, dir %x type %x nr %x iolen %d.\n", iocmd,
851 _IOC_DIR(iocmd), _IOC_TYPE(iocmd), _IOC_NR(iocmd),
854 iolen = _IOC_SIZE(iocmd);
855 if (iolen > sizeof(arg))
857 data = ifr->ifr_data + sizeof(iocmd);
858 if (copy_from_user(&arg, data, iolen))
863 case SBE_IOC_PORT_GET:
864 ret = do_get_port(ndev, data);
866 case SBE_IOC_PORT_SET:
867 ret = do_set_port(ndev, data);
869 case SBE_IOC_CHAN_GET:
870 ret = do_get_chan(ndev, data);
872 case SBE_IOC_CHAN_SET:
873 ret = do_set_chan(ndev, data);
876 ret = do_del_chan(ndev, data);
878 case SBE_IOC_CHAN_NEW:
879 ret = do_create_chan(ndev, data);
881 case SBE_IOC_CHAN_GET_STAT:
882 ret = do_get_chan_stats(ndev, data);
884 case SBE_IOC_LOGLEVEL:
885 ret = do_set_loglevel(ndev, data);
887 case SBE_IOC_RESET_DEV:
888 ret = do_reset(ndev, data);
890 case SBE_IOC_CHAN_DEL_STAT:
891 ret = do_reset_chan_stats(ndev, data);
894 ret = do_port_loop(ndev, data);
897 ret = do_framer_rw(ndev, data);
900 ret = do_musycc_rw(ndev, data);
903 ret = do_pld_rw(ndev, data);
905 case SBE_IOC_IID_GET:
906 ret = (iolen == sizeof(struct sbe_iid_info)) ?
907 c4_get_iidinfo(ci, &arg.u.iip) : -EFAULT;
908 if (ret == 0) /* no error, copy data */
909 if (copy_to_user(data, &arg, iolen))
919 static const struct net_device_ops c4_ops = {
920 .ndo_open = void_open,
921 .ndo_start_xmit = c4_linux_xmit,
922 .ndo_do_ioctl = c4_ioctl,
925 static void c4_setup(struct net_device *dev)
927 dev->type = ARPHRD_VOID;
928 dev->netdev_ops = &c4_ops;
931 struct net_device *__init
932 c4_add_dev(hdw_info_t *hi, int brdno, unsigned long f0, unsigned long f1,
935 struct net_device *ndev;
938 ndev = alloc_netdev(sizeof(ci_t), SBE_IFACETMPL, c4_setup);
940 pr_warning("%s: no memory for struct net_device !\n",
942 error_flag = -ENOMEM;
945 ci = (ci_t *)(netdev_priv(ndev));
949 ci->state = C_INIT; /* mark as hardware not available */
952 ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
955 CI = ci; /* DEBUG, only board 0 usage */
957 strcpy(ci->devname, hi->devname);
960 #if defined(SBE_ISR_TASKLET)
961 tasklet_init(&ci->ci_musycc_isr_tasklet,
962 (void (*) (unsigned long)) musycc_intr_bh_tasklet,
965 if (atomic_read(&ci->ci_musycc_isr_tasklet.count) == 0)
966 tasklet_disable_nosync(&ci->ci_musycc_isr_tasklet);
967 #elif defined(SBE_ISR_IMMEDIATE)
968 ci->ci_musycc_isr_tq.routine = (void *)(unsigned long)musycc_intr_bh_tasklet;
969 ci->ci_musycc_isr_tq.data = ci;
973 if (register_netdev(ndev) ||
974 (c4_init(ci, (u_char *) f0, (u_char *) f1) != SBE_DRVR_SUCCESS)) {
975 OS_kfree(netdev_priv(ndev));
977 error_flag = -ENODEV;
980 /*************************************************************
981 * int request_irq(unsigned int irq,
982 * void (*handler)(int, void *, struct pt_regs *),
983 * unsigned long flags, const char *dev_name, void *dev_id);
985 * irq -> The interrupt number that is being requested.
986 * handler -> Pointer to handling function being installed.
987 * flags -> A bit mask of options related to interrupt management.
988 * dev_name -> String used in /proc/interrupts to show owner of interrupt.
989 * dev_id -> Pointer (for shared interrupt lines) to point to its own
990 * private data area (to identify which device is interrupting).
992 * extern void free_irq(unsigned int irq, void *dev_id);
993 **************************************************************/
995 if (request_irq(irq0, &c4_linux_interrupt,
998 pr_warning("%s: MUSYCC could not get irq: %d\n",
1000 unregister_netdev(ndev);
1001 OS_kfree(netdev_priv(ndev));
1006 #ifdef CONFIG_SBE_PMCC4_NCOMM
1007 if (request_irq(irq1, &c4_ebus_interrupt, IRQF_SHARED, ndev->name, ndev)) {
1008 pr_warning("%s: EBUS could not get irq: %d\n", hi->devname, irq1);
1009 unregister_netdev(ndev);
1010 free_irq(irq0, ndev);
1011 OS_kfree(netdev_priv(ndev));
1018 /* setup board identification information */
1023 /* also sets PROM format type (promfmt) for later usage */
1024 hdw_sn_get(hi, brdno);
1026 switch (hi->promfmt) {
1027 case PROM_FORMAT_TYPE1:
1028 memcpy(ndev->dev_addr,
1029 (FLD_TYPE1 *) (hi->mfg_info.pft1.Serial), 6);
1030 /* unaligned data acquisition */
1031 memcpy(&tmp, (FLD_TYPE1 *) (hi->mfg_info.pft1.Id), 4);
1032 ci->brd_id = cpu_to_be32(tmp);
1034 case PROM_FORMAT_TYPE2:
1035 memcpy(ndev->dev_addr,
1036 (FLD_TYPE2 *) (hi->mfg_info.pft2.Serial), 6);
1037 /* unaligned data acquisition */
1038 memcpy(&tmp, (FLD_TYPE2 *) (hi->mfg_info.pft2.Id), 4);
1039 ci->brd_id = cpu_to_be32(tmp);
1043 memset(ndev->dev_addr, 0, 6);
1048 /* requires bid to be preset */
1049 sbeid_set_hdwbid(ci);
1051 /* requires hdw_bid to be preset */
1052 sbeid_set_bdtype(ci);
1056 #ifdef CONFIG_PROC_FS
1057 sbecom_proc_brd_init(ci);
1059 #if defined(SBE_ISR_TASKLET)
1060 tasklet_enable(&ci->ci_musycc_isr_tasklet);
1063 error_flag = c4_init2(ci);
1064 if (error_flag != SBE_DRVR_SUCCESS) {
1065 #ifdef CONFIG_PROC_FS
1066 sbecom_proc_brd_cleanup(ci);
1068 unregister_netdev(ndev);
1069 free_irq(irq1, ndev);
1070 free_irq(irq0, ndev);
1071 OS_kfree(netdev_priv(ndev));
1073 /* failure, error_flag is set */
1084 rtn = c4hw_attach_all();
1086 return -rtn; /* installation failure - see system log */
1088 /* housekeeping notifications */
1089 if (cxt1e1_log_level != log_level_default)
1090 pr_info("NOTE: driver parameter <cxt1e1_log_level> changed from default %d to %d.\n",
1091 log_level_default, cxt1e1_log_level);
1092 if (cxt1e1_max_mru != max_mru_default)
1093 pr_info("NOTE: driver parameter <cxt1e1_max_mru> changed from default %d to %d.\n",
1094 max_mru_default, cxt1e1_max_mru);
1095 if (cxt1e1_max_mtu != max_mtu_default)
1096 pr_info("NOTE: driver parameter <cxt1e1_max_mtu> changed from default %d to %d.\n",
1097 max_mtu_default, cxt1e1_max_mtu);
1098 if (max_rxdesc_used != max_rxdesc_default) {
1099 if (max_rxdesc_used > 2000)
1100 max_rxdesc_used = 2000; /* out-of-bounds reset */
1101 pr_info("NOTE: driver parameter <max_rxdesc_used> changed from default %d to %d.\n",
1102 max_rxdesc_default, max_rxdesc_used);
1104 if (max_txdesc_used != max_txdesc_default) {
1105 if (max_txdesc_used > 1000)
1106 max_txdesc_used = 1000; /* out-of-bounds reset */
1107 pr_info("NOTE: driver parameter <max_txdesc_used> changed from default %d to %d.\n",
1108 max_txdesc_default, max_txdesc_used);
1110 return 0; /* installation success */
1115 * find any still allocated hdlc registrations and unregister via call to
1124 struct net_device *ndev;
1127 for (i = 0, hi = hdw_info; i < MAX_BOARDS; i++, hi++) {
1128 if (hi->ndev) { /* a board has been attached */
1129 ci = (ci_t *)(netdev_priv(hi->ndev));
1130 for (j = 0; j < ci->max_port; j++)
1131 for (k = 0; k < MUSYCC_NCHANS; k++) {
1132 ndev = ci->port[j].chan[k]->user;
1134 do_deluser(ndev, 0);
1144 cleanup_hdlc(); /* delete any missed channels */
1148 pr_info("SBE - driver removed.\n");
1151 module_init(c4_mod_init);
1152 module_exit(c4_mod_remove);
1154 MODULE_AUTHOR("SBE Technical Services <support@sbei.com>");
1155 MODULE_DESCRIPTION("wanPCI-CxT1E1 Generic HDLC WAN Driver module");
1156 #ifdef MODULE_LICENSE
1157 MODULE_LICENSE("GPL");
1160 /*** End-of-File ***/